Table 1.

Comparison of sonographic texture features (Mean ± STD) between the normal (n = 14) and post-RT (n = 24) groups.

		ASM	IDM	Con	Var	Cor		Shade	Pro
Feature	Subjects	(×104)	(×102)	(×10−2)	(×10−2)	(×104)	Ent	(×10−4)	(×10−6)
	Normal group	6.4 ± 1.6	9.0 ± 1.0	2.1 ± 0.5	2.9 ± 1.0	23.1 ± 4.8	7.6 ± 0.3	2.17 ± 2.09	5.3 ± 4.6
0°	Post-RT group	3.6 ± 1.0	9.0 ± 1.9	3.3 ± 1.1	9.7 ± 3.5	8.9 ± 2.8	8.3 ± 0.2	23.3 ± 17.7	59.1 ± 47.1
	Percent change (%)	−44.0	−0.5	58.1	233.3	−61.4	9.3	969.9	1011.4
	p-value	<0.001	0.920	<0.001	<0.001	<0.001	<0.001	<0.001	<0.001
	Normal group	5.9 ± 1.8	7.4 ± 1.3	3.9 ± 1.4	2.8 ± 1.0	10.5 ± 6.1	7.7 ± 0.4	0.8 ± 0.1	2.3 ± 1.9
45°	Post-RT group	2.8 ± 0.8	6.2 ± 1.5	10.2 ± 4.5	9.1 ± 3.6	5.3 ± 2.1	8.5 ± 0.2	12.3 ± 10.7	29.7 ± 24.6
	Percent change (%)	−52.5	−15.9	160.5	224.3	−49.1	11.2	1358.3	1182.7
	p-value	<0.001	0.149	<0.001	<0.001	0.001	<0.001	<0.001	<0.001
	Normal group	6.0 ± 1.8	7.7 ± 1.2	3.8 ± 1.3	2.8 ± 1.0	10.7 ± 6.0	7.7 ± 0.4	0.9 ± 0.1	2.4 ± 1.9
90°	Post-RT group	2.9 ± 0.9	6.4 ± 1.5	10.0 ± 4.2	9.2 ± 3.6	5.5 ± 2.1	8.5 ± 0.2	12.6 ± 11.5	30.9 ± 27.1
	Percent change (%)	−52.0	−17.4	161.8	223.8	−48.9	11.1	1331.8	1181.3
	p-value	<0.001	0.004	<0.001	<0.001	0.001	<0.001	<0.001	<0.001
	Normal group	5.9 ± 1.8	7.4 ± 1.2	3.9 ± 1.3	2.8 ± 1.0	9.8 ± 3.3	7.7 ± 0.4	0.9 ± 0.1	2.4 ± 2.0
135°	Post-RT group	2.8 ± 0.8	6.2 ± 1.4	10.4 ± 4.3	9.2 ± 3.6	5.2 ± 2.2	8.5 ± 0.2	12.3 ± 11.5	30.1 ± 27.1
	Percent change (%)	−52.8	−16.4	169.3	225.6	−47.0	11.2	1256.3	1163.8
	p-value	<0.001	0.010	<0.001	<0.001	<0.001	<0.001	<0.001	<0.001
	Normal group	6.1 ± 1.7	7.9 ± 1.3	3.4 ± 1.4	2.8 ± 1.0	13.5 ± 7.5	7.7 ± 0.3	1.2 ± 1.5	3.1 ± 3.0
Average	Post-RT group	3.0 ± 0.8	6.9 ± 1.4	8.5 ± 4.3	9.3 ± 3.6	6.2 ± 2.2	8.5 ± 0.2	15.1 ± 11.5	37.4 ± 27.1
	Percent change (%)	−50.2	−12.0	147.8	226.8	−53.9	10.7	1158.5	1105.5
	p-value	<0.001	0.035	<0.001	<0.001	<0.001	<0.001	<0.001	<0.001

¹Note: Percent change (%) = (post-RT parameter value – normal parameter value) *100/normal parameter value.